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Vyhodnocení reprodukce v chovu ovcí clun forest
KLEČÁKOVÁ, Martina
The aim of the diploma thesis was to evaluate reproduction indicators (percentage of pregnancy, fertility, intensity, total rearing, reactivity, rearing of lambs born and total lamb mortality), their comparison over the years and the average in the Czech Republic. The influence of the age of the mother on fertility and the proportion of sheep according to the frequency of litters was also evaluated. Monitoring was carried out in breeding sheep clun forest (at 30 ewes) at Studnice farm from 2015 - 2018. In the monitored reproduction indicators, there was a statistically significant effect (P 0,01) only in the fertility of the herd in question for the period 2015 - 2018. This was caused by higher fertility differences in the first two years on average by 10% between selected breeding and average in the Czech Republic . For the past two years, fertility was on average 25% lower than the national average. When assessing the effect of maternal age on fertility, the highest fertility rates were in three-year-old (174%) and four-year-old sheep (168%). The effect on the highest fertility rates was the highest number of lambs born (about 2 lambs per sheep). Since the third year of age fertility has fallen until the fifth year. Then there was a slight increase (the number of born lambs in the sheep (1.5 lambs) increased) and the lowest fertility (133%) was found in seven-year-old and older sheep, when the number of lambs was also decreasing. Based on the above data on the effect of age on fertility, a statistically highly significant effect (P 0,01) was observed in the observed breeding for the years 2015 - 2018.
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Influence of The Chosen Factors on Fertility in Herd of Sumava Sheep
NOVÁKOVÁ, Iva
The goal of this Diploma thesis was an analysis of the chosen factors and their influence on sheep fertility in the herd of sumava sheep. This factors were presented through the age of sheep, sheep nutrition and stress influence on the sheep fertility. For this purpose it was chosen the sumava sheep farming in herd Michlova Hut. At first this herd was introduced, than statistically described in terms of sheep fertility and in the next part there was analysis of the chosen factors. Based on these results the conclusions and the basic breeder recommendation to breeder community were deduced. The main reason for choice this topic was a growing breeder´s interest in breeder´s economy and various possibilities of the increasing sheep fertility.
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Analysis of the reproductive properties of the sheep´s herd in Michlova Huť
NOVÁKOVÁ, Iva
At the present time in the Czech Republic we can see a growing number of sheep. This is associated with the breed´s development and with various possibilities of their breeding in terms of production. Farmers are mostly focused on breeding for meat and lamb production but what is also important is the selection breeding which is governed by specific rules. These breeds have to maintain constant animal quality. For this purpose they use animal health checks, regular selection, data derived from the records and results of the performance monitoring. The main goal of my Bachelor thesis was an analysis of the reproductive indicators in the herd of sheep in Michlova Huť for which I used data collected during the last two years of breeding (2009, 2010). I also conducted a comparison of fertility observed in sheep during the development of this farm with the current situation of selection breeding. Reproductive indicators are indeed the main source of information about the past and the future development of the sheep´s herd. Based on this analysis I found out that there was no significant influence of paternal line on sheep fertility and ewes (female sheep) intensity of fertility in the surveyed sample of Sumava sheep in Michlova Huť during the years 2009 and 2010. Furthermore, I discovered that the longer this farm exist the higher value of the ewes fertility is there. In 1978 the value of the sheep fertility on this farm was 113,4% while the actual situation from 2010 shows the fertility value of 146,1%. To describe the current state of Sumava sheep in Michlova Huť I used the results of the the performance monitoring found in 2009 and 2010 which do not differ from one another and so they confirm the same breeder´s trend.
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